Magnetic properties of carbon nano-particles produced by a pulsed arc submerged in ethanol

Parkansky, N.; Alterkop, B.; Boxman, R.L.; Leitus, Gregory; Berkh, O.; Barkay, Zahava; Rosenberg, Yu.; Eliaz, Noam

doi:10.1016/j.carbon.2007.11.008

Cited by 44 publications

(25 citation statements)

References 17 publications

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“…It exhibits a unique combination of strengths compared with other techniques commonly used in biotechnology (such as flow cytometers and sorters, high gradient magnetic cell concentration methods, monolayer cell preparation systems and automated slide stainers), including: (1) the ability to quantify biological matter and, at the same time, analyze its microscopic features; (2) preservation of the structure and morphology of the captured particles, which might otherwise not be observed if an acid dissociation step is required; (3) extremely high selectivity and sensitivity due to a vertical flow; (4) a requirement for less sample manipulation relative to conventional immunomagnetic separation techniques; (5) applicability to any liquid sample, including whole blood; (6) samples as small as 1 ll and target particles as small as several nanometers can be analyzed [27]; (7) the possibility to simultaneously process up to five samples within bracketed areas on a single slide, without cross-contamination.…”

Section: Introductionmentioning

confidence: 99%

“…So far, BF has been used to track Escherichia coli bacteria at low concentrations in natural waters [28][29][30], characterize biofilms within ships' water ballast tanks [31], separate breast cancer and other cells from human peripheral blood [32,33], separate polyethylene wear debris from hip simulator fluid [34], capture of carbon nanoparticles produced by a pulsed arc submerged in ethanol [27] and determination of the role of magnetic minerals embedded in the comb cells of Vespinae [35].…”

Section: Introductionmentioning

confidence: 99%

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Magnetic isolation of particles suspended in synovial fluid for diagnostics of natural joint chondropathies

Mendel¹,

Eliaz²,

Benhar³

et al. 2010

Acta Biomaterialia

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Magnetic isolation of particles suspended in synovial fluid for diagnostics of natural joint chondropathies

Mendel¹,

Eliaz²,

Benhar³

et al. 2010

Acta Biomaterialia

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“…Bio-ferrography (Desjardins et al 2001;Parkansky et al 2007) was used to 'capture' the magnetic particles embedded in the cells. This technique is a modified version of conventional ferrography -a method of particle separation on a glass slide based upon the interaction between an external magnetic field and the magnetic moments of the particles suspended in a flow stream (Seifert and Westcott 1972).…”

Section: Introductionmentioning

confidence: 99%

Gravity orientation in social wasp comb cells (Vespinae) and the possible role of embedded minerals

Ishay

Barkay

Eliaz

et al. 2007

Naturwissenschaften

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Social wasps and hornets maintain their nest in the dark. The building of the combs by all Vespinae is always in the direction of the gravitational force of Earth, and in each cell's ceiling, at least one 'keystone' is embedded and fastened by saliva. The sensory mechanisms that enable both building of sizeable symmetrical combs and nursing of the brood in the darkness merit investigation, and the aim of the present study was to identify and characterize the 'keystones' that exist in the ceiling and in the walls of the social wasp comb cells. Bio-ferrography was used to isolate magnetic particles on slides. These slides, as well as original cells, were analyzed in an environmental scanning electron microscope by a variety of analytical tools. It was found that both the roof and the walls of each comb cell bear minerals, like ferrites, as well as Ti and Zr. The latter two elements are less abundant in the soil around the nest. Ti and Zr are known to reflect infrared (IR) light. IR imaging showed a thermoregulatory center in the dorsal thorax of the adult Oriental hornet. It is not known yet whether these insects can sense IR light.

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“…This is a recent modification of the conventional ferrograph. It was specifically developed to allow for magnetic isolation of target cells or tissues [28][29][30][31][32][33]. These two types, however, are outside the scope of this article.…”

Section: Ferrographymentioning

confidence: 98%

Failure Analysis and Condition Monitoring of an Open-Loop Oil System Using Ferrography

Levi

Eliaz

2009

Tribol Lett

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Condition monitoring of dynamic systems based on oil analysis is well known for closed-loop systems. The motivation for this work stemmed from repeating failures of Wankel engines. Failure analysis identified contact fatigue as the failure mechanism, but could not identify the cause. Thus, the objective of the work was to develop a method for condition monitoring of open-loop oil systems. A variety of analytical techniques was evaluated, including directreading ferrography, analytical ferrography combined with computational image analysis, atomic emission spectroscopy, and scanning electron microscopy combined with energy dispersive X-ray spectroscopy. Procedures for collection and separation of oil samples were developed. Analytical ferrography was found most useful in condition monitoring. Six engines were detected in their early failure stage. Those engines were disassembled, and contact fatigue failures in the bearing needles were observed. The quantitative image analysis allowed for a fairly objective rating of the wear level. The method developed in this work has already been implemented on a daily basis for monitoring the health of Wankel engines, with much success.

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Magnetic properties of carbon nano-particles produced by a pulsed arc submerged in ethanol

Cited by 44 publications

References 17 publications

Magnetic isolation of particles suspended in synovial fluid for diagnostics of natural joint chondropathies

Magnetic isolation of particles suspended in synovial fluid for diagnostics of natural joint chondropathies

Gravity orientation in social wasp comb cells (Vespinae) and the possible role of embedded minerals

Failure Analysis and Condition Monitoring of an Open-Loop Oil System Using Ferrography

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